Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From reactant having at least one -n=c=x group as well as...
Patent
1997-11-04
1998-07-21
Gorr, Rachel
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From reactant having at least one -n=c=x group as well as...
25218222, 528 59, 528 73, 528 745, 524774, C08G 1810
Patent
active
057836523
ABSTRACT:
This invention relates to mixtures of urethane prepolymers of allophanate-modified diphenylmethane diisocyanates with epoxides. The addition of the epoxide increases the reactivity of these prepolymers. It is now possible to form polyurethanes from these mixtures based on prepolymers of diphenylmethane diisocyanates wherein less catalyst is necessary.
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Rosthauser James W.
Slack William E.
Bayer Corporation
Brown N. Denise
Gil Joseph C.
Gorr Rachel
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